Average Error: 29.5 → 29.5
Time: 1.3s
Precision: binary64
\[\tanh \left(x + 1\right) - \tanh 1\]
↓
\[\tanh \left(x + 1\right) - \tanh 1\]
\tanh \left(x + 1\right) - \tanh 1
↓
\tanh \left(x + 1\right) - \tanh 1
double code(double x) {
	return ((double) (((double) tanh(((double) (x + 1.0)))) - ((double) tanh(1.0))));
}
↓
double code(double x) {
	return ((double) (((double) tanh(((double) (x + 1.0)))) - ((double) tanh(1.0))));
}

Error

Bits error versus x

Try it out

Your Program's Arguments

Results

Enter valid numbers for all inputs

Derivation

  1. Initial program 29.5

    \[\tanh \left(x + 1\right) - \tanh 1\]

  2. Final simplification29.5

    \[\leadsto \tanh \left(x + 1\right) - \tanh 1\]

Reproduce

herbie shell --seed 2020153 
(FPCore (x)
  :name "(- (tanh (+ x 1.0)) (tanh 1.0))"
  :precision binary64
  (- (tanh (+ x 1.0)) (tanh 1.0)))